1822563225666 has 48 divisors (see below), whose sum is σ = 3987743842368. Its totient is φ = 601572333600.

The previous prime is 1822563225629. The next prime is 1822563225733. The reversal of 1822563225666 is 6665223652281.

It is a super-2 number, since 2×1822563225666² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 469750 + ... + 1966161.

It is an arithmetic number, because the mean of its divisors is an integer number (83077996716).

Almost surely, 2^{1822563225666} is an apocalyptic number.

1822563225666 is an abundant number, since it is smaller than the sum of its proper divisors (2165180616702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1822563225666 is a wasteful number, since it uses less digits than its factorization.

1822563225666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436327 (or 2436324 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 54.

The spelling of 1822563225666 in words is "one trillion, eight hundred twenty-two billion, five hundred sixty-three million, two hundred twenty-five thousand, six hundred sixty-six".